Since the 1920s this discrepancy has been explained by the presence of isotopes ; the atomic mass of any isotope is very close to satisfying the whole number rule, with the mass defect caused by differing binding energies being significantly smaller.

Since the 1920s, Oxford has been the most popular candidate among " anti-Stratfordians ," a collective term for adherents of the various alternative-authorship theories.

Since the 1920s, Prime Ministers have typically been conferred the Grand Cordon of the Order of the Rising Sun, or the Grand Cordon of the Order of the Paulownia Flowers ( until 2003 a special higher class of the Order of the Rising Sun ), depending on tenure and eminence.

Since the production of high-quality semiconductor materials was still decades away, Lilienfeld's solid-state amplifier ideas would not have found practical use in the 1920s and 1930s, even if such a device were built.

Since the 1920s, it has experienced rapid growth and established many industries for agricultural products and machinery, textiles, pharmaceuticals, metal products, and services.

Since the 1920s, the two largest political parties have been the Conservative Party and the Labour Party.

Since the 1920s, X-ray diffraction has been the principal method for determining the arrangement of atoms in minerals and metals.

Since the end of the 20th century, the economic strength during the 1920s has drawn close comparison with the 1950s and 1990s, especially in the United States of America.

Since the 1920s, Lancaster had been the much larger and principal community of the Antelope Valley, as well as the rest of California's Mojave Desert.

Since the 1960s Leiston became famous outside the UK as the home of the Summerhill School, founded by A. S. Neill in the 1920s, which was the first major " free school "-referring to freedom in education.

Since the district's period of significance extends to 1944, most of those buildings erected after the 1920s were built as infill within the areas already subdivided by the 1920s.

Since the district's period of significance extends to 1944, most of those buildings erected after the 1920s were built as infill within the areas already subdivided by the 1920s.

Since the early 1920s, 150 movies and about a dozen television shows have been filmed here, including Tom Mix films, Hopalong Cassidy films, The Gene Autry Show, and The Lone Ranger.

Since the 1920s, the economy has been based primarily on agriculture.

Since the 1920s, an increasingly elaborate sub-culture of organized science fiction fandom has arisen, initially among correspondents to the letter columns of science fiction magazines.

Since the 1920s, Governors-General have acted solely on the advice of the local ministers, rather than on that of the British Government.

Since the 1920s the Wallabies have worn green and gold jerseys.

Since the late 1920s the tension between the air and naval services had declined.

Since the 1920s, the street's name has been synonymous with the American advertising industry.

Since the early 1920s, this modern vernacular form has been the standard style of writing for speakers of all varieties of Chinese throughout mainland China, Taiwan, Malaysia and Singapore as the written form of Modern Standard Chinese.

Since late 1920s, nearly all Chinese newspapers, books, and official and legal documents have been written in vernacular Chinese using the national standard.

Since the 1920s, 1.

Since the mid 1950s, when urethane foam first made its appearance in the American market, growth has been little short of fantastic.

Since then McLean has performed tours of the UK ( 2007, 2008 ( one appearance ), 2010, 2011 ), Ireland ( 2007, 2010, 2011 ), mainland Europe ( 2008, 2010 ), Australia and New Zealand ( 2008, 2011 ) and South East Asia ( 2011 ).

" Since these tablets predate the Sulbasutras period by several centuries, taking into account the contextual appearance of some of the triples, it is reasonable to expect that similar understanding would have been there in India.

Since nothing other than an intelligent cause has been demonstrated to be able to yield such a strong appearance of design, Darwinian claims notwithstanding, the conclusion that the design seen in life is real design is rationally justified.

Since this experience, Iceman has regained control over his powers and refined his appearance with jagged spikes on his limbs, back, and hair.

Since Odo had not yet learned how to morph into a humanoid appearance, he appeared in his natural gelatinous form.

Since scale patterns on Cardassian necks have been shown to change from appearance to appearance ( Garak, for example ), makeup artist Michael Westmore has theorized in a 2005 issue of Star Trek Insider that Cardassians continually shed and regrow scales.

Since the appearance of Super Mario Bros., a number of individuals named Mario have been nicknamed " Super Mario " by fans or by the media.

Since 1915, the Ku Klux Klan was growing in urban chapters across the Midwest, particularly since veterans had been returning from the war ; it made its first major appearance in Oklahoma later that year on August 12, 1921, less than three months after the riot.

Since the appearance of her study, other scholars further examined Thucydides ' treatment of realpolitik.

Since 1937, Gladstone has been portrayed on no fewer than 37 occasions in film and television, beginning with Montagu Love's appearance as him in the 1937 film Parnell.

Since this initial appearance, plans have been underway at The Weinstein Company to bring Knight Rider to the big screen as an updated take on the original series pilot, " Knight of the Phoenix ".

Since that time, a wide range of personal appearance options and clothing styles, including nudity, have become more widely acceptable, all of which was uncommon before the hippie era.

Dana Aspinall also suggests that an Elizabethan audience would have been similarly taken aback by the play's harsh, misogynistic language: " Since its first appearance, some time between 1588 and 1594, Shrew has elicited a panoply of heartily supportive, ethically uneasy, or altogether disgusted responses to its rough-and-tumble treatment of the ' taming ' of the ' curst shrew ' Katherina, and obviously, of all potentially unruly wives.

Since his first appearance on The Simpsons, Santa's Little Helper has appeared in merchandise relating to the show.

Since enamel is semitranslucent, the color of dentin and any restorative dental material underneath the enamel strongly affects the appearance of a tooth.

Since the election of Pyotr Pimashkov as the mayor of Krasnoyarsk in 1996, the appearance of the city gradually improved: the old historical buildings were restored, the asphalt walkways were replaced with paving-stone, and numerous squares and recreation areas with fountains were either restored or constructed from scratch.

Since the FDP had never claimed such a candidacy ( and hasn't done since ) and had no chance of attaining it against the two major parties, this move was widely seen as flippant political marketing alongside other moves, such as driving around in a campaign van dubbed the Guidomobile, wearing the figure 18 on the soles of his shoes or appearance in the Big Brother TV show.

Since the cloudy appearance is due to nonuniform glass dissolution, it is ( somewhat paradoxically ) less marked if dissolution is higher, i. e. if a silicate-free detergent is used ; also, in certain cases, the etching will primarily be seen in areas that have microscopic surface cracks as a result of the items ' manufacturing.

Since the character was the leader of the turtle-like Koopa Troopas the two began to base his new appearance on them, creating a new illustration.

Since Yume Kojo: Doki Doki Panic and Super Mario Bros. 2, Wart had the same appearance.

Since his appearance in Mario Tennis, Waluigi has received mostly negative reception.

Since the heat arrived after Sirius's appearance, it was said that Sopdet had given birth to it, thus Sopdu was seen as being a child of Sopdet, and thus also of Sah.